CN105479266A - Five-shaft turn-milling machining center dynamic accuracy testing method - Google Patents
Five-shaft turn-milling machining center dynamic accuracy testing method Download PDFInfo
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- CN105479266A CN105479266A CN201511000992.9A CN201511000992A CN105479266A CN 105479266 A CN105479266 A CN 105479266A CN 201511000992 A CN201511000992 A CN 201511000992A CN 105479266 A CN105479266 A CN 105479266A
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- shaft
- axle
- lathe
- milling
- turn
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/007—Arrangements for observing, indicating or measuring on machine tools for managing machine functions not concerning the tool
Abstract
The invention discloses a five-shaft turn-milling machining center dynamic accuracy testing method. Five-shaft linkage turn-milling is performed in three linear shafts which are the X shaft, the Y shaft and the Z shaft and two rotary shafts which are the C shaft and the B shaft. A three-dimensional space is composed of the X shaft, the Y shaft and the Z shaft. According to a five-shaft turn-milling machining center machine calibration method, the space position accuracy and dynamic accuracy indicators of swing shaft linkage are comprehensively evaluated, and in machining, the radial size of a rotary body or interpolation milling of a complex cambered surface is achieved through the X shaft and an E shaft; deviation between a tool and the center of a spindle is achieved through the Y shaft; the axial size of the rotary body or interpolation machining of a Z-direction milling complex cambered surface can be achieved through the Z shaft; the C shaft rotates around the Z shaft to achieve the circumferential feeding purpose on the rotary body; and the B shaft rotates around the Y shaft to form an included angle between the tool and the rotary center of the spindle. By the adoption of the method, the dynamic machining accuracy of equipment five-shaft linkage can be tested.
Description
Technical field:
The present invention relates to a kind of five-axle turn-milling Compositions of metal-working machines dynamic accuracy method of testing, belong to machine tooling checking of dynamic accuracy, adjustment technology field, be specially adapted to the checking of dynamic accuracy adopting wobble heads five-axle turn-milling combined-machining equipment.
Background technology
At present, ununified Testing index in five-axle turn-milling Compositions of metal-working machines checking of dynamic accuracy, generally indirectly reflect lathe dynamic linkage precision with the comprehensive process precision index of NAS979 test specimen, calibration procedures is not directly perceived, and the correctness (different tool track bring machining accuracy difference) of machining accuracy by five-axis robot program optimization, the many factors such as matching (amount of feeding, the speed of mainshaft, bite), cooling effect (oil cooling, emulsion etc.) of cutting data, be difficult to the quality of screening apparatus dynamic accuracy index.In addition, the object of precision adjustment is the needs of adjustment in order to meet equipment precision and processing, examination, and original adjusting process needs the processing frequently carrying out test specimen, the blindness bringing precision to adjust and the qualified contingency of test specimen, add the adjustment adjustment cycle of lathe, adjustment efficiency is lower.As shown in Figure 1, five-axle turn-milling Compositions of metal-working machines structural representation as shown in Figure 2 for five-axle turn-milling Compositions of metal-working machines coordinate system schematic diagram.
Summary of the invention
The present invention is directed to the problem of current turn-milling complex machining center dynamic accuracy without method of testing, propose a kind of adjusting process, use this method of testing can evaluate and test out the dynamic locating accuracy of each axle of lathe accurately and reliably, promote the efficiency of lathe accuracy test.
The present invention is by the following technical solutions:
Method of the present invention comprises following steps:
Confirm that mechanical precision and positioning precision, positioning precision and the kinetic characteristic of each axle of turn-milling complex machining center meet lathe acceptance criteria, otherwise do not possess dynamic accuracy test request.
Standard ball device 3 is made up of handle of a knife 1 and standard ball 2, and the data obtained, to the length L value of main shaft end face, as Fig. 3, and inputs in corresponding lathe parameter by measurement standard ball device 3 centre of sphere.
Forward lathe B axle 4 to 90 ° of positions.
Standard ball device 3 is arranged on tested machining center main shaft.
Dial gauge 5 frame is fixed on lathe stiff end, and indicator bulb vertically upward.
Mobile machine tool X, Y, Z axis, makes standard bulb peak contact with indicator bulb peak, meter record indicator dish numerical value.
Perform five axle point of a knife point compensate functions tests, rotate lathe B axle 4, scope from 0 ~ 180 °, dial gauge 5 indicator change maximum just time lathe dynamic accuracy.
Accompanying drawing explanation
Fig. 1 coordinate system schematic diagram;
Fig. 2 five-axle turn-milling Compositions of metal-working machines structural representation;
Fig. 3 is standard ball device;
Fig. 4 is dial gauge and standard ball installation diagram;
Fig. 5 is dynamic accuracy adjustment schematic diagram.
Specific implementation method
The present invention is a kind of dynamic accuracy method of testing of five-axle turn-milling Compositions of metal-working machines, and the dynamic locating accuracy of evaluation and test lathe five-axle turn-milling Compositions of metal-working machines interlock, below for Siemens 840Dsl digital control system, illustrates the specific implementation method of test:
Geometric accuracy and the positioning precision of each axis servomotor of test turn-milling complex machining center meet equipment acceptance standard, if any not meeting place, make it reach required precision by machinery adjustment and positioning compensation technology, otherwise have a strong impact on test result, affect the judge to equipment dynamic accuracy.
The data obtained, to the length L value of main shaft end face, as Fig. 3, and inputs in corresponding lathe parameter by measurement standard ball device 3 centre of sphere.
Forward lathe B axle 4 to 90 ° of positions, perform following program:
G0B90
M30
Standard ball device 3 is arranged on tested machining center main shaft.
Dial gauge 5 frame is fixed on lathe stiff end, indicator bulb vertically upward, as Fig. 4.
Mobile machine tool X, Y, Z axis, makes standard set-up 3 bulb peak contact with indicator bulb peak, meter record indicator dish numerical value.As Fig. 5 is shown in pressure table on standard ball bulb, find bulb peak, table reset, performs following test program:
TRAORI
LAB1:G91G0B0
G4F5
G91G0B180
G4F5
GOTOBLAB1
M30
Run epimere test program, the dynamic accuracy of test turn-milling complex machining center, indicator change maximum is lathe dynamic accuracy.
Claims (2)
1. a five-axle turn-milling Compositions of metal-working machines dynamic accuracy method of testing, is characterized in that, comprise the following steps:
A) precondition is tested: each axle geometric accuracy of five-axle turn-milling Compositions of metal-working machines and positioning precision meet lathe acceptance criteria, and reference axis kinetic characteristic meets the requirements;
B) standard ball device is made up of handle of a knife and standard ball, and the data obtained to the length L value of main shaft end face, and inputs in corresponding lathe parameter by the centre of sphere of bioassay standard ball device;
C) centre of gyration and the main-shaft axis deviate of lathe B axle is measured;
D) lathe B axle is forwarded to 90 ° of positions;
E) standard ball device is arranged on tested machining center main shaft;
F) indicator bracket is fixed on lathe stiff end, indicator bulb vertically upward;
G) mobile machine tool X, Y, Z axis, makes the bulb peak of standard ball device contact with dial gauge indicator bulb peak, meter record indicator dish numerical value;
H) perform five axle point of a knife point compensate functions to test, mobile machine tool B axle, scope from 0 ~ 180 °, indicator change maximum just time lathe dynamic accuracy.
2. five-axle turn-milling Compositions of metal-working machines dynamic accuracy method of testing as claimed in claim 1, it is characterized in that, reference axis kinetic characteristic refers to amplitude-frequency and phase-frequency characteristic.
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CN201511000992.9A CN105479266A (en) | 2015-12-28 | 2015-12-28 | Five-shaft turn-milling machining center dynamic accuracy testing method |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115647932A (en) * | 2022-11-02 | 2023-01-31 | 湖北工业大学 | Method for controlling mounting precision of detachable milling head |
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WO2008102109A1 (en) * | 2007-02-22 | 2008-08-28 | Renishaw Plc | Calibration method and apparatus |
CN101758418A (en) * | 2009-12-14 | 2010-06-30 | 济南二机床集团有限公司 | Method for adjusting machining precision of five-axis linkage planer type milling machine |
CN103273379A (en) * | 2013-05-29 | 2013-09-04 | 成都飞机工业(集团)有限责任公司 | Method for detecting linkage accuracy of C-shaft of multi-shaft linkage double-pendulum numerical control milling machine |
JP2015051493A (en) * | 2013-09-09 | 2015-03-19 | 株式会社牧野フライス製作所 | Machine tool and measurement method of machine tool rotation shaft |
CN105043190A (en) * | 2015-05-11 | 2015-11-11 | 中工科安科技有限公司 | Five-axis linkage machine tool RTCP dynamic precision calibrating apparatus and calibrating method thereof |
-
2015
- 2015-12-28 CN CN201511000992.9A patent/CN105479266A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008102109A1 (en) * | 2007-02-22 | 2008-08-28 | Renishaw Plc | Calibration method and apparatus |
CN101758418A (en) * | 2009-12-14 | 2010-06-30 | 济南二机床集团有限公司 | Method for adjusting machining precision of five-axis linkage planer type milling machine |
CN103273379A (en) * | 2013-05-29 | 2013-09-04 | 成都飞机工业(集团)有限责任公司 | Method for detecting linkage accuracy of C-shaft of multi-shaft linkage double-pendulum numerical control milling machine |
JP2015051493A (en) * | 2013-09-09 | 2015-03-19 | 株式会社牧野フライス製作所 | Machine tool and measurement method of machine tool rotation shaft |
CN105043190A (en) * | 2015-05-11 | 2015-11-11 | 中工科安科技有限公司 | Five-axis linkage machine tool RTCP dynamic precision calibrating apparatus and calibrating method thereof |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115647932A (en) * | 2022-11-02 | 2023-01-31 | 湖北工业大学 | Method for controlling mounting precision of detachable milling head |
CN115647932B (en) * | 2022-11-02 | 2023-07-18 | 湖北工业大学 | Detachable milling head installation precision control method |
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